Finding the Fourth Proportional to 2,303.25, 3,178.56 and 1,255.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,303.25 : 3,178.56 = 1,255.38 : x
2. Step 2: Convert to fraction form
   2,303.25/3,178.56 = 1,255.38/x
3. Step 3: Cross multiply
   2,303.25x = 3,178.56 × 1,255.38
4. Step 4: Simplify right side
   2,303.25x = 3,990,300.65
5. Step 5: Solve for x
   x = 3,990,300.65/2,303.25
6. Step 6: Final answer
   x = 1,732.47